A computer device has a user interface which receives user input to control movement of a game entity in a collection run of a computer implemented game. The computer device has a display which displays the game entity moving in response to the user input in the collection run. At least one processor of the computer device determines resources collected by the movement of game entity in the collection run. When one or more required resources have been collected, the at least one processor causes, in response to user input. one or more further items for the computer implemented game to be provided.